Reading time: 7 minutes |
Section 6.3 of the ABRSM Grade 5 Music Theory exam tests your knowledge of orchestral instruments.
You’ll be given a question like this: “Circle true or false for each of the following five statements.”
The statements might look like:
- “The oboe usually plays at a lower pitch than the bassoon.” → False
- “The horn is a woodwind instrument.” → False
- “The bass drum produces sound of indefinite pitch.” → True
To answer these questions, you need to know the instrument families, their characteristics, and transpositions.
Here’s everything you need to know.
The Four Instrument Families
1. String Family
Instruments that produce sound by bowing or plucking strings.
| Instrument | Clef | Transposing? |
|---|---|---|
| Violin | Treble | No |
| Viola | Alto | No |
| Cello | Bass (and Tenor) | No |
| Double Bass | Bass | Octave lower |
| Harp | – | No |
Key Facts:
- The viola uses the alto clef – the only orchestral string instrument that does.
- The double bass sounds one octave lower than written.
- The cello uses tenor clef when playing higher passages.
2. Woodwind Family
Instruments that produce sound by blowing through a hole or through a reed.
| Instrument | Reed Type | Transposing? |
|---|---|---|
| Flute | No reed (hole) | No |
| Piccolo | No reed (hole) | Octave higher |
| Oboe | Double reed | No |
| Clarinet | Single reed | Major 2nd lower (B♭ clarinet) |
| Bassoon | Double reed | No |
Key Facts:
- The flute has no reed – you blow through a hole.
- The piccolo sounds one octave higher than written.
- The clarinet uses a single reed.
- The oboe and bassoon use a double reed.
- The clarinet in B♭ sounds a major 2nd lower than written.
3. Brass Family
Instruments that produce sound by vibrating the lips into a mouthpiece.
| Instrument | Transposing? |
|---|---|
| Trumpet | Major 2nd lower (B♭ trumpet) |
| Horn | Perfect 5th lower (Horn in F) |
| Trombone | No |
| Tuba | No |
Key Facts:
- The trumpet in B♭ sounds a major 2nd lower than written.
- The horn in F sounds a perfect 5th lower than written.
- Brass instruments can use mutes to change their sound.
4. Percussion Family
Instruments that produce sound by being struck, shaken, or scraped.
| Type | Examples |
|---|---|
| Definite Pitch | Timpani, Xylophone, Glockenspiel, Vibraphone |
| Indefinite Pitch | Snare Drum, Bass Drum, Triangle, Cymbals, Tambourine |
Key Facts:
- Definite pitch percussion can play specific notes (e.g., timpani can be tuned to specific pitches).
- Indefinite pitch percussion produces noise without a recognisable pitch (e.g., bass drum, snare drum, triangle).
Voice Types (Choir)
| Voice Type | Range |
|---|---|
| Soprano | Highest female voice |
| Mezzo-Soprano | Middle female voice |
| Alto | Lowest female voice |
| Tenor | Highest male voice |
| Baritone | Middle male voice |
| Bass | Lowest male voice |
Transposing Instruments (Summary)
| Instrument | Interval | Direction |
|---|---|---|
| Clarinet in B♭ | Major 2nd | Lower |
| Trumpet in B♭ | Major 2nd | Lower |
| Clarinet in A | Minor 3rd | Lower |
| Horn in F | Perfect 5th | Lower |
| Cor Anglais | Perfect 5th | Lower |
| Piccolo | Octave | Higher |
| Double Bass | Octave | Lower |
Instrument Clefs (Summary)
| Instrument | Clef(s) |
|---|---|
| Violin | Treble |
| Viola | Alto |
| Cello | Bass (and Tenor) |
| Double Bass | Bass |
| Flute | Treble |
| Oboe | Treble |
| Clarinet | Treble |
| Bassoon | Bass (and Tenor) |
| Trumpet | Treble |
| Horn | Treble |
| Trombone | Bass (and Tenor) |
| Tuba | Bass |
Worked Examples: Exam Questions
Question A
“The oboe usually plays at a lower pitch than the bassoon.”
Answer: False ❌
Reason: The oboe is a higher pitch instrument than the bassoon. The bassoon plays lower.
Question B
“The horn is a woodwind instrument.”
Answer: False ❌
Reason: The horn belongs to the brass family.
Question C
“The bass drum produces sound of indefinite pitch.”
Answer: True ✅
Reason: The bass drum is an indefinite pitch percussion instrument.
Question D
“The flute uses a single reed.”
Answer: False ❌
Reason: The flute has no reed – it has a hole through which you blow.
Question E
“The horn in F sounds a perfect fifth lower than written.”
Answer: True ✅
Reason: The horn in F transposes down a perfect fifth.
Summary Table
| Statement | Answer |
|---|---|
| Oboe is lower than bassoon | ❌ False |
| Horn is woodwind | ❌ False |
| Bass drum = indefinite pitch | ✅ True |
| Flute uses a reed | ❌ False |
| Horn in F = perfect 5th lower | ✅ True |
How to Prepare for Section 6.3
- Learn the four instrument families – strings, woodwind, brass, percussion
- Know which instruments are transposing and by how much
- Remember the voice types (soprano, alto, tenor, bass)
- Use visual aids – watch videos of instruments being played
- Spread your memorisation over several days or weeks
Common Pitfalls to Avoid
- Confusing woodwind and brass. Brass = lip vibration; Woodwind = reed or hole.
- Forgetting transpositions. The piccolo and double bass transpose by octave.
- Mixing up reed types. Clarinet = single reed; Oboe/Bassoon = double reed; Flute = no reed.
- Not knowing the viola’s clef. Viola uses alto clef – the only string instrument that does.
Practice Makes Perfect
Understanding the theory is one thing, but exam success comes from repeated, focused practice. That’s why my interactive practice site (app.owenmusictheory.com) can make all the difference in your preparation.
Here’s how the two practice modes work:
Drill Mode: Master One Section at a Time
Drill Mode is designed for targeted practice. You get access to all the questions organised section by section, just like the real exam. This means you can:
- Focus specifically on orchestral instruments until it feels second nature
- Skip the sections you’re already confident in and spend your time where it matters most
- Practise the same question type repeatedly with virtually unlimited questions – you’ll never run out of fresh material
With instant feedback on every answer, you’ll learn from your mistakes immediately and reinforce correct answers right away.
Exam Mode: Simulate the Real Thing
When you’re ready to put it all together, Exam Mode gives you the full experience:
- Full-length papers in the exact format of the ABRSM exam
- Randomised questions each time you take a test – no two papers are the same
- A 2-hour time limit to help you build speed and stamina
- A final score and detailed feedback at the end, so you know exactly where you stand
This mode is invaluable for reducing exam-day anxiety. The more you practise under real conditions, the more confident you’ll feel when it counts.
Get Started
- Head to app.owenmusictheory.com
- Sign up free — no card required
- Try the free Pitch and Terms drills, or sit the free sample exam paper
- If it’s helping, upgrade for full access to every section and unlimited randomised papers
Grade 5 Theory is a one-time hurdle standing between you and your next practical grade. Practising smart — with realistic questions, instant feedback, and proper timed conditions — is the difference between walking in anxious and walking in ready.
Good luck!
